Thanks, I can see the light at the end of the tunnel.
There is no pattern to CC during SLAM, it is known to jump all over the place. I wouldn't be too concerned unless FC crashes and CC shoots up.
You are done when:
CC is 0.5 or lower;
You pass an OCLT (ie overnight FC loss test shows a loss of 1.0 ppm or less);
And the water is clear.